Aurelian was an upwardly-mobile soldier who was eventually appointed commander of the cavalry by Claudius II. With the aid of a sympathetic army he revolted against the accession of Quintillus and a civil war was avoided when the latter committed suicide following the growing popularity of his rival. Aurelian was then hailed as emperor by the Senate and the rest of the legions alike. His first mission was to strengthen the army by the introduction of the strictest reforms and discipline as well as quelling the various uprisings that had broken out over the last two decades. He thus spent the next five years until cut down by his own Praetorian Guard at the height of his glory. It seems Aurelian's personal secretary, after being reprimanded by the emperor for attempted extortion, felt an execution would follow. To guard against this possibility, he concocted a story about Aurelian intending to execute his personal guard and then rushed to share with them this manufactured evidence. Naturally, afraid for their lives, they entered the emperor's quarters and effected a preemptive strike. Somehow or other it was soon afterward found out that the formerly beloved emperor had no such motives and his secretary himself was swiftly executed for treason. When news reached Rome of what had happened Aurelian's wife seems to have actually been left nominally in power while a new emperor was selected, a period that may have lasted several months. Although history is a little hazy in this matter, it would mark the first and only time a Roman empress explicitly ruled the empire.